I wouldn't hesitate to send them back at all. I had asked for black shells with neon green artwork and received neon green shells with black artwork. I called up Adam last Wednesday to tell him about the issue, my iems got to him on Friday and when I called this morning he told me that they shipped out today and I should get them tomorrow. All in all, I've been without my jh13s for a week, but I didn't really mind the wait. If you don't mind waiting, I'd go ahead and send them back.